brasiliensis, Fundulus Valenciennes [A.] in Humboldt & Valenciennes 1821:163, Pl. 52 (figs. 3, 7) [Voyage de Humboldt et Bonpland v. 2 (Title page 1833); ref. 5612] Rio de Janeiro, Brazil. Neotype: MNHN 0000-2726. Possible syntypes: MNHN B-2950 [ex MNHN 0000-2726] (1), NMW 81111 (2). Type catalog: Bertin & Estève 1950:28 [ref. 19576]. Neotype designated by Huber 1992:131 [ref. 20639]; possible syntypes at MNHN need investigation. •Valid as Fundulus brasiliensis Valenciennes 1821 -- (Huber 1992:129 [ref. 20639]). •Valid as Rivulus brasiliensis (Valenciennes 1821) -- (Lazara 2001:271 [ref. 25711], Costa in Reis et al. 2003:535 [ref. 27061]). •Valid as Cryptolebias brasiliensis (Valenciennes 1821) -- (Costa 2004:115 [ref. 27763]). •Valid as Kryptolebias brasiliensis (Valenciennes 1821) -- (Costa 2004:107 [ref. 28584], Vermeulen & Hrbek 2005:7 [ref. 28142], Costa 2006:6 [ref. 28624], Costa 2007:12 [ref. 29397], Costa 2009:122 [ref. 30421], Carvalho-Filho 2023:94 [ref. 40480]). Current status: Valid as Kryptolebias brasiliensis (Valenciennes 1821). Rivulidae: Kryptolebiatinae. Distribution: South America: Atlantic coastal river basins (Brazil). Habitat: freshwater.